Copper alloy.



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VTILLIAM C. PEASE, F MARIETTA, OHIO.

COPPER ALLOY.

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No Drawing. I

To all whom it may concern:

Be it known that I, WILLIAM C.- PEASE, a citizen of the United States, residing at Marietta, in the county of Washington and State of Ohio, have. invented certain new anduseful Improvements in Copper Alloys, of which the following is a specification. v

This invention comprehends certain new and useful improvements in the art of metallurgy and relates particularly to a novel process of tempering or hardeningv copper, and to a new alloy produced thereby.

As is well known to those versed in the art to which this invention appertains, pure copper is soft and not capable of. being and useful metal or worked up into tools, bearings, and the like,

and with a knowledge of these conditions, my invention has for its primary object a simple and eflicient process whereby the required temper and hardness may be secured so that the product formed by the carrying out of the process hereinafter described will constitute a metal that will take and main- ;tain an edge, and that may be subjected to considerable friction and abrasive action without becoming appreciably or unduly worn, and will also be applicable in defierent arts where a non-corrosive and relatively ha rd metal may be required.

With these and other objectsin view as will more fully appear as the description proceeds, theinventlon consists in the various steps employed, in the ingredients used, and the mannerin which they are combined and in the metal or. alloy itself in its completed condition, all as will be hereinafter more fully described and claimed.

- For a full understanding of the invention, a

reference is to be had to the following de scription, in which I shall first describethe method used in producing the metal, then describe the completed article or metal from an analytical standpoint, and finally conclude with the claims wherein I shall set forth what I consider to be new with me.

In carrying out my invention, I take aluminium and iron pyrites in the ore; I melt the aluminium in a crucible and while it is melting add a small piece of clay of any of the ordinary kinds aboutv the size of a hens egg for each pound of. aluminium. When this mass has been thoroughly melted, I- add the iron pyrites and after the melted mass with the pyrites therein has been stirred well, I pour it o into any suitable form and Specification of Letters Patent.

Patented ran. is, rare.

Application filed January 25, 1915. Serial No. 4,356

to the hardness desired. Ordinarily, for all" usual purposes, I employ in the compound above described, sixteen parts of aluminium to two parts of iron'pyrites, but as above stated, that ratio is not always adhered to, but may be varied at will. The hardness of the metal or alloy can be still further increased by remelting the copper hardened in the manner hereinbefore described, and then adding a predetermined quantity of antimony, but it is tobe understood that my invention is not limited to the use of-antimony, although the use thereof ossesses advantages under certain condi ions, as is manifest.

By carrying out the process hereinbefore described, I produce a metal which has much the appearance of bronzeor gold, and wh1ch possesses the requisite hardness to render it susceptible of being applicable for use in various arts, the metal being capable of being molded, machined, or forged 1nto any desired shape and into any desired articles.

Preferably, the metal or alloyin its completed form comprises the following chemicalsuhstances, and preferably in the follow-' ing proportions, although as hereinbefore indicated, I want it to beunderstood that the proportions need not be adhered to and,

in fact, some of the ingredients, as for example, antimony, may be entirely dispensed with, according to the particular require.

ments of the case.

When antimony constitutes one of the substances or ingredients which together, in'

combined form, go to make up the tempered or hardened copper, the, following substances are used and preferably in the following proportions, namely: copper, 88.4; aluminium, 6.6'; antimony, 1.26; iron, 1.96; silicon, 1.60.

When antimony is not used, the remaining ingredients are preferably in the fol lowing proportions, although it is to be 2. An alloy of copper containing the following ingredients in substantially the fol- 15 lowing proportions, namely, 88.4 per cent. of copper; (5.6 per cent. of aluminium; 1.96 per cent. of iron; and 1.60 per cent. of silicon.

In testimony whereof I afliX my signature 20 in presence of two witnesses.

WILLIAM C. PEASE.

Witnesses: i i

D. W. GALL,

FREDERICK S. S'rrr'r. 

